python调用sendcloud模板发送带附件的邮件

import json
import urllib
import requests


class Email:
    apiUser = "* *"
    apiKey = "* *"
    send_from = " * * "
    def send_email(self, send_to, subject, templateInvokeName):
        xsmtpapi = {
            'to': “ * * ”，
            'sub': {
                '%content%': ‘ * * ’
            }
        }
        data = {
            "apiUser": self.apiUser,
            "apiKey": self.apiKey,
            "from": self.send_from,
            # "to": send_to,
            "subject": subject,
            "templateInvokeName":templateInvokeName,
            "xsmtpapi": json.dumps(xsmtpapi),
        }
        # 添加附件图片
        filename = r'C:\Users\Administrator\Desktop\a.png'
        display_filename = "filename.png"
        files = {"attachments": (urllib.parse.quote(display_filename), open(filename, "rb"))}
        url = "https://api.sendcloud.net/apiv2/mail/sendtemplate"
        try:
            response = requests.post(url, data=data,files=files)
            return (1, response.text)
        except Exception as e:
            print(e)
            return (0, "邮件发送失败")


if __name__ == '__main__':
    send_to = ‘ * * ’
    subject = '测试'
    templateInvokeName = 'world2'
    Email().send_email(send_to, subject, templateInvokeName)